

/*
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 * and open the template in the editor.
 */



import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

/**
 *
 * @author houfukude
 */
public class MyBufferedReaderUse {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws IOException {
        int N;
        //
        System.out.println("input the N:");
        BufferedReader b = new BufferedReader(new InputStreamReader(System.in));
        N = Integer.parseInt(b.readLine());
        System.out.println(N+"");
        //Queen2.Queen(N);
    }

}